Glassware forming machine



Sept. 27, 1932. c. w. SCHWENZFEIER ET AL 1,879,712

GLASSWARE FORMING' MACHINE Filed April 1a, 1929 Patentesept. .27'. 1932 CARL w scHwENzrmnn AND Joan E. ncLAueImnmoF. ToiEno, omo, AssIeNons To@ y ownNaInLINoIs GLASS. comun-Y, or Torrano, omo, A coBPoBATIoN 'or oHIo 1. i;

'GnasswAnn romnNG MACHINE Application meu' April 1a,

Our invention relates to improvements in glassware forming machines and more par-v gathering molds and operating to sever the 7 ten glass.

An object of the present invention is to generally improve the construction of the charge severing mechanism l and provide means \wh ereby exceptionally accurate adjustment of the posit1on of the cut-off knife ma `be obtained without diflculty. other object is to'provide means where- 1'5 by the cut-ff knife may be adjusted in two stages to its operative position, the first stage constituting a coarse adjustment by which a knifeis quickly brought toapproximately the proper operating position and a second stage constituting a fine adjustment by which the knife is set accurately in proper relation to the blank or gathering mold.

Other objects will be apparent hereinafter. In the drawing: A Fig. 1 is a side elevation showing the cutoff 1iiechanism in conjunction with a blank mo Y Fig- 2 is a sectional elevation thereof.

mold chargesV from the supply body of m01- Fig. 3 is a detail'sectional view showing.

3o the improved adjusting meansfor raising and lowering the knife.

Fig. 4 is a sectional view taken along the line IV-IV of Fig. 3.

ln the accompanying. drawing, 'the cut- Y '35l olf mechanism is shown 1n conjunction with a suctionv blank mold 5 or gathering mold which cooperates with -al neck mold 6 and blowing head 7 in the gathering of mold charges from the supply body of molten glass 8 and transformation of the mold charges into blanks orparisons. The lower end of the mold cavity opens thru the bottom of the mold 5 so that glass may be drawn into the cavity whenthe bottom of -the mold contacts.

. with the `surfaceo'f the supply body of glass 8 -in the container VC. j

The charge severing mechanism includes a knife 9 adapted to be moved laterally across the lower face of the blank mold. The knife is supported on the lower .end of a `vertical laas. serial No. 356,032.

rock shaft "10 which is jour-nailed. in upper and lower-bearings11`and 12 respectively; The lower bearing is carried by a bracket13 extendinghorizontally from the blowing head The upper bearing 11 (Fig. 2) is formed 55 at the outer end of a horizontal arm or braeket 14 which forms part of a rotaryjnold' carriage. The upper end of theshaft 10 is splined to a -sleeve'15 thru which it extends, said sleeve being mounted for -oscillation co, and reciprocation in the bearing 11.l A spur gear 16 at the upper end of -the sleeve 15 runs `in mesh vwith a rack bar' 17- mounted in a horizontal slideway 18 in the bracket 14. This rack bar is reciprdcabed 'at regular time 65 intervals to rock the shaft 10 and thereby im-A s part ahorizontal swinging movement to the .cut-off knife 9.

A bell crank lever 19 is connected thru a yoke 20 (Fig. 2) to an intermediate portion 70 of the sleeve 15 and is rocked periodically by means (not shown) to impart movement to 'the rock( shaft in the direction of its lengthA for the purpose of eifectin relative vertical movement between the-bl'an mold 5 and cut- 75 oif knife 9 after completion of each charge severing' operation. v

Adjustment of the cut-off knife 9 .for the purpose 'of'obtaining proper cooperation betweenthe knife and corresponding Ablank 80.

mold is. eifected in two stages. The irstor coarse adjustment is provided to obtain a quick movement ofthe knife to approximately the proper elevation o r position with respect to the blank'mold. The secondary or 85l e oadjustment providesfor movement lof theknife to precisely the proper position with respect to the bla-nk mold. The mechanism j by which the above adjustments may -be ob-A tained includes a sleeve or collar 21 threaded 90 `upon the rock shaft 10 `and carrying'a hand wheel 22 which is manually rotatable. lThe lower end of the sleeve 21 is split in thedirection of its length and 'formed with' ears 23 connected'by a lock screw 24. Adjust- .951;

ment of the screw 24 to bring the earstogetherserves to lock the sleeve against rotation on the rock shaft 10. Thus the lower end of the sleeve constitutes a clamp or locking device by which accidental rotation of them sleeve is prevented. The upper end of the sleeve 21 is formed with an annular flange 25 extending radially outward and taking over and rotatable upon a iiange 26 at the lower end of a tubular connector 27 vwithin which the flange 25 vis confined. This connector 27 extends into' a gear housing 28 formed at the' lower end of the upper sleeve 15. The upper end 29 of the connector 27 is threaded and extends into an annular chamber 30 where it engages internal threads 31 formed in the chamber. This connector rotatively secures the sleeves 15 and 21 together so that by rotating the hand wheel 22, the rock shaft 10 upon which the'sleeve 21 is threaded is moved in the direction of its length and thereby quickly changes the vertical position of the cut-olf knife 9 with respect to the blank mold 5. This constitutes what we term the coarse adjustment.

The constructionv providing for fine adjustment of the knife includes a worm gear 32 formed on the tubular connector' 27 just below the threaded upper end 29, said gear running in mesh with a worm 33 arranged.

within the gear housing 28 and mounted upon a horizontal shaft 34. This shaft 34 extends thru one end of the gear housing 28 and carries a hand wheel 35 which is manually rotatable. A spring pressed detent 36 (Fig. 4) is adapted to project into one of an annular series of recesses 37 to hold the shaft 34 against accidental rotation. By rotating the worm 33 and the worm gear 32 the connector 27 is rotated. Duey to the threaded connection between the` upper end of said connector andthe gear housing 28 and rotary connection between the lower sleeve 21 and connector 27, said connector and the sleeve 21 will be moved vertically upward or downward with the result that the rock shaft 10 is moved up or down. Because of the worm drive between the shaft 34 and the connector 27 rotation of the worm 33 very slowly rotates the worm gear 32 with `the result that an exceptionally fine adjustment of the knife 9 relative tothe blank mold 5 may be obtained with ease.

Excessive downward movement of the connector 27 in obtaining fine adjustment of the knife is prevented by the presence of a stop 38 (Fig. 3) which projects thru one wall of the housing 28 into the path of downward movement of the threadedI portion 29. As shown. in Fig. 3 the lower end of the threaded portion 29 comes-in contact withl the stop 38 after the sleeve has been adjusted down to, a predetermined degree and prior to movement of the lower end of the connector entirely without the housing. j

In adjusting thev cut-off mechanism embodying the above structurethe hand wheel 22 is rotated until the knife is brot into approximately. the proper position for severing charges of glass inthe mold from the glass in the supply body. The small handwheel 3.5 is then adjusted to obtain a fine setting of the knife 9. The spring pressed detent 36 .prevents accidental changing of this fine 'setting- The hand wheel 22 which is operated to obtain the coarse adjustment may be locked against vaccidental rotation by setting the lock screw 24 so that the lower end ofthe.

sleeve 21 firmlyl grips the rock shaft, 10.

. Modifications may be Aresorted to within the spirit and scope of the appended claims.

. What we claim is:

1. In a glassware forming machine, the combination of a suction blank mold, a knife adapted to be moved laterally across the charge receiving end of the mold, a vertical rock shaft supporting the knife, means including a hand wheel threaded on the shaft for adjusting said shaft in the direction of its length, and means toy adjust the rock shaft and hand wheel in` unison in the direction of the length of the shaft with respect tothe mold.

2. In a glassware forming machine, the combination of a support, a sleeve extending vertically thru and j ournaled `in the support, means to oscillate and periodically reciprocate said sleeve, a rock shaft extending thru and splined to said sleeve, a cutoffknife at the lower end of the rock shaft, an adjusting collar threaded on the rock shaft below said sleeve, a gear housing formed at the lower end of said sleeve', a tubular member ar- .cate said sleeve, a rock shaft extending thru and splined to said sleeve, a cutoff knife at the lower end of the rock shaft, an "adjusting collar threaded on the rock shaft below said sleeve, a gear housing formed at the lower end of said sleeve, a tubular member arranged in part within the housing and having its upper end threaded into a portion of the housing, connection between the tubular member and collar whereby rotation of the latter moves the rock shaft in the direction of its length, and a worm and gear mechanism operable to rotate said tubular memberand therebyadjust the collar, tubular member vand shaft axially as a unit.

4. In a glassware forming machine, the combination of a support, a sleeve extending vertically thru and journaled in the support, means to oscillate and periodically reciprocate said sleeve, a rock shaft extending thru and splined to said sleeve,;a cutoff knife at the lower end of the rock shaft, an adjusting collar threaded on the rock shaft below said sleeve, a gear housing formed at the lower end of said sleeve, a tubular member arranged in part within the housing and having its upper end threaded into a portion of the housing, connection between thetubular member and collar whereby rotation of the latter moves the rock shaft in the direction of its length, a worm and gear mechanism operable to rotate said tubular member and thereby adjust the collar, tubular member and shaft axially as a unit, and meansto limit the degree. of adjustment obtainable by the worm and gear mechanism. r

5..In combination a vertical rock shaft, a cutoff knife at the lower end of the shaft, a support for the rock shaft, connection between the rock shaft and support whereby said rock shaft is free to oscillate and reciprocate in the support, meansincluding a sleeve threaded on the rock shaft to adjust said shaft axially, and additional means operable to adjust the shaft 'and sleeve as a unit in the direction of their length with respect to the support.

6. In combination a vertical rock shaft, a

cutoff knife at the lower end of the shaft, a support for the rock shaft,\connection between the rock shaft and support whereby said rock shaft is free 'to oscillate and reciprocate in the support, means including a sleeve threaded on the rock shaft to adjust said shaft axially, and a worm Aand gear device operable to adjust the shaft and sleeve as a unit in the direction of their length with respect to the support.

7 In combination a vertical rock shaft, a cutoff knife at the lower end of the shaft, a support for the rock shaft, connection between the rock shaft and support whereby said rock shaft is free to oscillate and reciprocate in the support, means includino'a sleeve threaded on the rock shaft to adjust said shaft axially, a worm and geardevice operable to adjust the shaft and sleeve as a unit in the vdirection of their length with respect to the support, and means to limit the degree of adjustment obtainable by the worm and gear device without limiting the extentof adjustment obtainable by the first named adjusting means. v

8. In combination a vertical rock shaft, a

ing element and the rock shaft, and means providing a connection between the adjusting devices, preventing relative movement in a direction lengthwise of the shaft and permitting relative rotation of said devices,

l0. The combination of a knifeshaft, a supporting element for the shaft, an adjusting device having a screw threaded connection with the supporting element, and a second adjusting device having a screw threaded connection with the shaft, said adjusting devices being interconnected for relative rotation-and held against relative movement in a direction lengthwise of the shaft.

11. The combinationof a knife shaft, a supporting elem-ent for the shaft, an adjusting device having a screw threaded connection with the supporting element, a second adjusting device having a screw tlreaded connection with the shaft, said adjusting devicesbeing interconnected for relative rotation and held against relative movement in a direction lengthwise of the shaft, and means for moving said shaft, supporting element and adjusting devices up and down bodily as a unit. l

12. The combination of a knife shaft, a supporting element for the shaft, an adjusting device having a-screw threaded connection with the supporting element, a second adjusting device having a screw threaded connection with the shaft, said adjusting devices being interconnected for relative rotation, and held against relative movement in a direction lengthwise of the shaft, means for moving said shaft, supporting element and adjusting devices up and'down bodily as a unit, means for rocking said unit about the axis of the shaft, and means for locking said adcutoiil knife at the lower end of the shaft, a

supportfor the rock shaft, connection between the rock shaft and support whereby said rock shaft is free to oscillate and reciprocate in the support, means including a sleeve threaded on the rock shaft to adjust said shaft axially, additional means operable A to adjust the shaft and sleeve as a unit in the direction ofk their length with respect to the support, and locking devices individual lso 

